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At TED 2010, Bill Gates unveils his vision for the world's energy future, describing the need for "miracles" to avoid planetary catastrophe.
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The necessary goal? Zero carbon emissions globally by 2050.
Definitions:
fast reactor:
nuclear reactor in which nuclear fissions are caused by fast neutrons because little or no moderator is used.
(moderator:
a substance, as graphite or heavy water, used to slow neutrons to speeds at which they are more efficient in causing fission.)
